How to use the New Xbox One Experience Guide menu

The New Xbox One Experience (NXOE) is here, bringing a dramatically different interface to Microsoft's Xbox One console. If you've been with Xbox One for a while, the NXOE's many changes will require some adjustment. Nearly everything has been moved around, the main menu adds vertical scrolling on top of horizontal, and the new Guide menu dominates the experience.
The Xbox One featured a simplistic Guide before, accessed by double-tapping the Home button on the controller. It allowed users to snap apps and take screenshots, but not much else. The NXOE Guide, on the other hand, incorporates much of the Xbox 360's Guide menu functionality. This improved Guide lets users view their friends list, send messages, adjust settings, and more. It's a lot to take in, really, so we've written this guide to using the NXOE Guide complete with helpful screenshots!